In the previous sections we have shown that, in several CCR systems, we can have significant amounts of low entropy/cooling time gas. If this is so, it should be possible to detect it
through high resolution spectroscopy.
In the future we will have microcalorimeters on board XRISM [1]} and ATHENA [2]}.
We have carried out simulations based on spectral fits presented in the previous sections to gauge how well these instruments will characterize low temperature components.
